I've got a good bit of dnd content on my itch page, for the discerning palate. Hevaily mythologically inspired.
Most recently, I have my Fomor Folio.
A 64 page pdf of monsters, magic items, and lore for DnD5e, allowing a full epic fantasy campaign based on ancient Celtic Myth.
Balor of the Evil Eye, Reborn.
His three Queens: The Cailleach, Cethlenn, and Sgian Arran.
A total of 49 Fomor statblocks, ways to convert other monsters to Fomor, and a framework for basing a whole campaign around them, or just using them in your game piece by piece.
A bonus statblock for the beneficent archfey called the Green Knight.
The Black Crochan, the Tathlum, Caledbolg, Fragarach.